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I want to supply my laser (lpc815) with alkaline batteries. They have 1.5 volts, but I want my laser to be able to still use them when the voltage from each battery drops to 1.2v, so I'll need 4 AA or AAA's (which is a lot, but, oh well). I'll be running it at ~400mA-450mA (with a heat sink, of course). My diode (lpc815 ~2.5v) + my driver with a silicon diode (~2.0v) = ~4.5 volts.
In order to increase the voltage of the batteries, I need to connect them in series, right? So, if I connected, say, two with a capacity of 1000mAh in series, I would get 3.0v with 1000mAh, no? If I connected two batteries with 1000mAh in parallel, they would still give me 1.5v, but with a capacity of 2000mAh, yes? I'm asking because this is what makes sense to me, but I have no idea if this is actually how this works or not.
I read somewhere on the 'net that AA's have ~2000mAh and AAA's have ~1000mAh. So, I should use 3 AA's and take out the silicon diode, then, which will give me much more battery life than the AAA's, right? (4 hours instead of 2)
~420mA isn't way too much current to get a good life out of an alkaline, is it? I don't want to use rechargeable NiMH or Lithium batteries, though...
Any help is greatly appreciated.
EDIT: maybe i just answered my own questions... Can someone verify, though? I don't know if what I'm sayin' is correct.
In order to increase the voltage of the batteries, I need to connect them in series, right? So, if I connected, say, two with a capacity of 1000mAh in series, I would get 3.0v with 1000mAh, no? If I connected two batteries with 1000mAh in parallel, they would still give me 1.5v, but with a capacity of 2000mAh, yes? I'm asking because this is what makes sense to me, but I have no idea if this is actually how this works or not.
I read somewhere on the 'net that AA's have ~2000mAh and AAA's have ~1000mAh. So, I should use 3 AA's and take out the silicon diode, then, which will give me much more battery life than the AAA's, right? (4 hours instead of 2)
~420mA isn't way too much current to get a good life out of an alkaline, is it? I don't want to use rechargeable NiMH or Lithium batteries, though...
Any help is greatly appreciated.
EDIT: maybe i just answered my own questions... Can someone verify, though? I don't know if what I'm sayin' is correct.
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